<template>
    <div>message的值：{{ message }}</div>
    <div>obj.message的值：{{ obj.message }}</div>
</template>
<script setup>
import { reactive,toRefs } from 'vue';
const obj =reactive({message:'666'})
let {message} =toRefs(obj)
setTimeout(()=>{
    message.value='333'
},2000)
</script>